Canal sparing humeral implant and related methods
AssigneeEncore Medical, L.P.
InventorsAlysha Robicheaux, Ellen Chen
Life of this patent
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Abstract
A humeral implant is provided. The implant includes a humeral stem including a plurality of fins. At least one fin comprises a serrated bottom edge. A radial distance between an inner bottom edge of the at least one fin and a centerline of the humeral implant increases along a distal length of extension of the at least one fin. At least the serrated bottom edge of the at least one fin is configured to cut into and compact bone of the metaphysis of a humerus toward relatively denser cancellous bone of a peripheral portion of the humerus when press-fit therein, thereby providing sufficient press-fitting for cementless fixation of the humeral stem into the humerus. Related kits and methods are also provided.
Claims18
A surgical kit for shoulder arthroplasty, the surgical kit comprising a plurality of humeral implants, wherein each of the plurality of humeral implants comprises a collar, a central body extending distally from and originating at the collar, and a plurality of fins extending downward and radially outward from the central body and having a proximal portion connected to and originating at the central body, wherein at least some of the plurality of humeral implants have a collar of a same size and a central body of a same size, and wherein the at least some of the plurality of humeral implants having collars and central bodies of the same size have a plurality of fins of a different size, and wherein, on a largest size humeral implant of the at least some of the plurality of humeral implants, the plurality of fins protrude radially relatively farther from a centerline of the largest size humeral implant compared to smaller size humeral implants of the at least some of the plurality of humeral implants.
A surgical kit for shoulder arthroplasty, the surgical kit comprising:
- a plurality of humeral implants, wherein each of the plurality of humeral implants comprises:
- a collar;
- a central body extending distally from and originating at the collar;
- and
- a plurality of fins extending downward and radially outward from the central body and having a proximal portion connected to and originating at the central body;
- wherein at least some of the plurality of humeral implants have a collar of a same size and a central body of a same size, and wherein the at least some of the plurality of humeral implants having collars and central bodies of the same size have a plurality of fins of a different size, and wherein, on a largest size humeral implant of the at least some of the plurality of humeral implants, the plurality of fins protrude radially relatively farther from a centerline of the largest size humeral implant compared to smaller size humeral implants of the at least some of the plurality of humeral implants;
- a centering guide having a size the same as the collars of the at least some of the plurality of humeral implants;
- and
- a reamer having a size the same as the collars of the at least some of the plurality of humeral implants.
Dependencies are inferred from the claim text.